Denatured alcohol containing a lower alkyl acetal



Patented Nov. i14 3939 p 2 11 DENATUBEID ALGOHOL CQN'IG A ILQWEB YL AGE-EAL 9. Flag, Jim, and James 'Wendell til 1 T m, to Eastn ll-l r1- womrcny, Rochester, N. Y a corporation oil.

New Jersey No Bra. [Application Gctoher 29, 1935,

S No. 179,669

invention x'elatestothe dena Example H alcohol, and to alcohol so denatured. Per cent by It is an object of our invention to provide volume a denaturant which will render ethyl alcohol con- Light acid and washed alcohol oils 4.00 5 taining it unfit for use as a beverage, which can- Allyl alcohol fraction 3.00 5 not be economically removed from the alcohol Isopropyl al h 4.25 by any known methods, which willnot render the Water 1.50 alcohol unfit for industrial uses in which dena- Dl-isopropyl ether 10.00 tured alcohol has customarily been employed, and Acetal 77.50 1 which will be free from methanol. Other objects E mample III will hereinafter app ar. Per cent b We have discovered that a lower alkyl acetal volume y selected from the group consisting of acetal and 150 m 1 21mm dimethyl acetal is'an efiective denaturant for E 1}; 1 r 10 lo ethyl alcohol. 'In denaturing ethyl alcohol with f e 1 75 16 our novel denaturants, we may use from 0.5 to 5 v 1 parts or the lower alkyl acetal, or even more, T e light acid and washed alcohol oils and per 100 parts of 95% alcohol. the allyl alcohol fraction referred to are described Our novel denaturants may be used alone in in United States Patent 1,975,091. From 0.5 to 5 20 denaturing, or they may be used in conjunction parts, or even more, of such combinations as with denaturing materials derived from the dethose described above may be used per 100 parts structive distillation of hardwood, such as those of 95% l h l, p

which are described United states Patents What we claim as our invention and desire to 1,975,090, 1,975,091, and 1,975,092. While We may be secured by Letters Patent of the United States use a mechanical mixture of the lower alkyl aceto' w e ood a ts, we prefer to 1. Industrial ethyl alcohol denatured with 0.5 intl'muce h lower alkyl acetalalong with the to 5 parts of a lower alkyl acetal selected from hardwooddenammnt 0115, into the upper the group consisting of acetal and dimethyl aceions abubb -cup ctlo ns u whe tal, as an essential denaturing element, per 100 they are met by the ascending vapors or ethyl parts of 95% ethyl alcohoL coho r o! a m x of ethyl alcohol arid 2. Industrial ethyl alcohol denatured with 0.5 naturmg grade isopmpanol' in the manner which to 5 parts of acetal, as an essential denaturing is fully set forth in Patent 1,975,091. The P Y element, per 100 parts of 95% ethyl alcohol. 1mm! in which the alkyl may be 3. Industrial ethyl alcohol denatured with 0.5 used may vary widely our novel denatumnts to 5 parts of dimethyl acetal, as an essential de- 35 may also be used in conjunction with ethers, or naturm element er m0 rts f 957 th 1 with any other denaturants with which they may I g p e y be found to be compatible. 0

As illustrative examples. we may use, for de- 40 naturing, compositions such as the following: g gg fi 40 Ezample I Per cent by volume Light acid and washed alcohol oils 4 Allyl alcohol !raction---'.---- a Dllnethyl aceta ea Isopropyl alcohol... 4r 

